Question

Estimate the mass of food and water that a team of six astronauts would need for a standard two-year mission to Mars. (Note: the two years includes the round trip.)

Answer 1

Astronauts on the International Space Station, or ISS, often spend six to 12 months in space, orbiting Earth. It can be a little cramped staying inside the space station all that time. Astronauts still need to do their everyday living, such as working, eating, relaxing, and exercising, but with fewer resources than they have on Earth.